Pump for the elevation of liquids



L. M. BRADASKA PUMP FOR THE ELEVATION OF LIQUIDS Filed Feb. 26, 1958 Oct. 20, 1959 INVENTOR 2,909,127 PUMP roR THE ELEvATIoN or LIQUiDs Leo Maximilian Bradaska, Cordoba City, Argentina Application February 26, `1958, Serial No. 717,766 1' clam. v(ci. 10s-5260) The present invention is related to pumps in general and, more particularly, to a new pumpfor raising liquids such Ias, for instance, water, hydrocarbons and such like which have to be lifted by force from underground layers -to the surface. This new pump is specially designed to serve for draining oil wells which having lost their excess pressure gases, have been deprived of their lifting energy, with the consequent advantage that due to this new pump a better and practically total working of any oil well can be obtained even though its automatic purge has ceased. It is redundant to enlarge upon the great advantage of this new pump which allows of a larger rentability of oil wells and a higher index of productivity, inasmuch as all the oil wells which, in the cou-rse of years, had to Abe abandoned due to having lost their capacity of raising the oil will be made productive due to the raising power of the new pump. If up to the present only liquid hydrocarbons have been referred to, it lshould now be stressed that the new pump can be used as well for the raising to the surface of other liquids such las water and such like, thus providing yet another means `.for extracting liquids from layers situated in the subsoil.

Other objects and advantages will become apparent in the Ifollowing specification when considered in light of the attached drawings, in which:

Figure 1 is 'a fragmentary View of a tranversal Vertical cut through the new pump set up for raising liquids.

Figure 2 is a horizontal transversal cut through the pump of Figure 1 following line II--II of the iigure; and

Figure 3 is a horizontal transversal cut through the pump of Figure 1 following line III- III of the ligure.

With reference now to the accompanying drawings, it is to be pointed out that the new pump 1 for lifting liquids has an outer jacket 2 having a closed lower end portion 2a which may be plunged into the layer of liquid to be lifted, while the open upper end 2b of the outer jacket 2 is hermetically closed by means of a ring-shaped lid 3. A concentric pipe 5 extends through the lid 3 concentric with the jacket 2 and is provided with a lower outlet 6 shaped like a truncated cone and having diametrical choke 7 in operative engagement spaced above and coaxially with the truncated cone shaped head 8 of a nozzle 9 having an axial passage 10; The bottom 11 of the jacket 2 is integral therewith and shaped like an inverted funnel. The lid 3 of the jacket 2 has injection nozzles 12 extending therethrough and connected by a piping 17 to at least one device (not shown) generating forced gas as, for instance, steam, compressed air and the like.

The nozzle 9 at the lower portion olf the jacket 2, has in addition to its head 8 in lthe shape of a truncated cone, a ring-formed lip 13 acting `as seat and a hermetic retention means for the nozzle 9 in the outlet 14 of the bottom 11. The nozzle 9 extends through the outlet 14 with the ring lip 13 engaging the upper inner end of the bottom 11. A securing means 16 is mounted on the nozv VCC zle 9 and locks the nozzle 92 against of the bottom 11.

the lower 'side 15 ring-shaped chamber defined bythe outer periphery of the lifting pipe 5 on Aone side and the inner periphery of the jacket 2 on the other, and are connected to the piping 17 coming from the forced gasgenerating source (not shown), by means of an interposed preferably ring# shaped collector 18, acting as compensator and'stabilizer for the entering forced gas column, particularly in those cases where a plurality of injection nozzles 12 are pro-- vided.

The pipe 5 may *be provided beyond the lid 3 of the outer jacketV 2 with tubular prolongation means'l19 for transporting the extracted liquid to the'storing place (not shown).

When the pump 1 is set up in a perforation 20 made in the subsoil 21 and the lower portion 2a of the jacket 2 is plunged into the layer of liquid 22 to Abe lifted, the connections are completed at one end of the piping 17 with a forced gas generating source, while the raising pipe 5 is coupled on to the storing place for the extracted liquid.

When the valves (not shown) of the piping 17 are opened, a ring-shaped column of gas, for instance, steam, compressed air etc. having `a suitable atmospheric excess pressure is injected through the collector 18 andthe nozzles 12 into the ring-shaped chamber 4 along which it iiows down to the lower portion of the chamber 4 where it rebounds from the adjacent face formed like a truncated cone of the bottom 11 shaped like an inverted funnel to be deiiected, following Ithe bent arrows, in ascending direction, crossing the reduced zone defined by the head 8 of the nozzle 9. The air then flows through the complementary outlet 6 in the pipe 5 to follow its ascending path through the passage 23 of the pipe 5.

When this forced ascending gas column passes through the above described reduced zone, a vacuum is created within the passage 10 of the spout or nozzle 9 which absor-bs the liquid from the layer 22, which spouts inthe form of a jet through the outlet of the nozzle 9 into the passage 23 of the pipe 5 passing through the throttle 7 of the same, the extracted liquid being sucked by the ascending forced gas column `and finally discharged through the prolongation or prolongations 19 into the storage place or places, where the liquid is eventually separated from the carrier gas.

The quantity of liquid which is raised is regulated by column, taking Iinto account however, the depth of the well and other factors well known to the experts.

It can be appreciated in View of the foregoing description that the `structure of the device, which it is desired to protect, is extremely simple and totally lacking in movable or rotative pieces, which feature increases considerably the duration of its components. It must be pointed out, furthermore, that the relative price of the new pump is extremely low as compared with the profits yielded by its usefulness, apart from the fact that, with the aid of the new pum considerable quantities of liquid can be extracted from oil wells which have lost their lifting gas, and which, up to the present, could not be made profitable, the said properties giving singular importance from every point of view to the new construct-ion.

It is to be understood that the new pump which it is desired -to protect is susceptible of certain modifications of detail and structure provided they fall within the spirit and scope of the same as deiined in the appended claim.

What I claim is:

A jet pump comprising a cylindrical hollow jacket, an upwardly and inwardly converging frusto-conical bottom wall integrally formed on the lower end of said jacket,

Patented `ott. zo, 195s said bottom wall having an axial boreiformed therein, a lid secured in sealed relation to the upper end of said Y jacket, a pipe mounted concentrically in said jacket and extending in sealed relation through said lid, an integral choke 'formed onA the lower end of said pipe, said choke having an upwardly and inwardly converging frustoconical xialwall terminating in an axial port having a diameter substantially smaller than the diameter of said pipe, said pipe havingthe lower end thereof spaced substantially above said bottom wall, a hollow cylindrical' nozzle, an annular lip integrally formed on said nozzle and extending radially outwardly therefrom intermediate the upper and lower ends thereof, said nozzle having the lower end thereof extending downwardly through said axial bore in saidbottom wall with said lip in engagement with said bottom wall, means releasably mounted on the lower end of said nozzle in engagement with the lower face of said bottom wall securing said nozzle to said bottom wall, a frusta-conical head with an upwardly and inwardly converging outer wall integrally formed on 2,909,127 v Y A A Y Y y the upper Yend `of said nozzle, said head lhaving the upper end thereof spaced slightly below the lowerend of said pipe and a plurality of gas injection nozzles mounted in said lid and arranged to direct gas under pressure into the space between said jacket and said pipe whereby said gas owing from the space between said jacket and said pipe through said choke in the lower end of said pipe draws fluid material through said nozzle and through said choke` into said pipe.

References Cited in the iile of this patent v UNITED STATES PATENTS 

